Timothy Leary

Meet Timothy Leary, The 1960s Harvard Professor Who Became The ‘High Priest Of LSD’

Published August 16, 2019
Updated August 20, 2019
Published August 16, 2019
Updated August 20, 2019

Harvard professor-turned-psychedelic drug advocate Timothy Leary turned an entire generation onto LSD — and was deemed "the most dangerous man in America" by President Nixon for it.

Timothy Leary was one of the most famous yet misunderstood figures of 20th-century counterculture. His fervent admirers saw him as a philosopher and psychedelic guru who was in charge of a revolution in our psychological and spiritual lives.

But his critics saw him as a threat to public order; U.S. President Richard Nixon famously declared Leary “the most dangerous man in America.”

Whether he was revered or reviled, Leary was nonetheless a complicated man. He was a lifelong anti-authoritarian and fun-loving explorer with a genuine interest in expanding the possibilities of human consciousness. But he was also a celebrity-obsessed, egotistical partier, charlatan, and often untrustworthy person.

Bill Minutaglio, who co-wrote a biography on Leary titled The Most Dangerous Man in Amercia, said to NPR that “he’s kind of, you know, a Mr. Magoo on acid, if you will. He’s just tripping his way through life, and circumstances happen. He opens one door and then plummets nine stories but somehow or other lands on a trampoline and goes to another floor.”

Timothy Leary’s Early Rebellions

Timothy Leary At His Desk

PL Gould/IMAGES/Getty ImagesTimothy Leary photographed at his home circa 1966.

Born in 1920 in Springfield, Massachusetts, Leary engaged in especially pronounced mischief as a young man.

For starters, he was kicked out of the famous West Point Military Academy as the consequence of a drinking binge.

Later on, in 1941, he was expelled from the University of Alabama for spending a night in a female dormitory. After some time in the military during World War II, Leary eventually returned to academia and earned a Ph.D. in Clinical Psychology from the University of California, Berkeley.

He spent the early part of the 1950s living a relatively standard, middle-class life with his wife and two children while working in California Bay Area universities and directing research for the Kaiser Family Foundation. His work focused on such topics as personality tests and group therapy. His first book came out in 1957 and detailed personality disorders. Always one to ruffle feathers, some of Leary’s colleagues accused him of failing to give them adequate credit.

Indeed, even during this period of relative stability, Leary managed to engage in a fair bit of chaos through drinking and sleeping around. In what would become a recurring feature of his life, his family bore the brunt of his actions.

When his first wife Marianne Busch confronted him about his infidelities, he reportedly told her, “That’s your problem.”

She committed suicide in 1955.

Introduction To Psychedelics And LSD

In 1958, Timothy Leary briefly moved to Europe with his children. While in Spain, he had a mysterious bout of illness that left him delirious.

He would later write about the experience: “With a sudden snap, all the ropes of my social self were gone. I was a 38-year-old male animal with two cubs. High, completely free.”

Timothy Leary On A Lecture Tour

Wikimedia CommonsTimothy Leary speaking at a lecture tour to students in the late 1960s.

Upon returning from Europe, he accepted a position as a lecturer at Harvard University. Then, during a trip to Mexico, he tried psychedelic psilocybin mushrooms for the first time, perhaps inspired by his out-of-body experience in Europe. Recalling his delirium there, tripping became a seminal experience for the psychologist.

The Leary that returned from Mexico was a different man. He created the Harvard Psilocybin Project with Richard Alpert, an associate in the psychology department who would later be better known as Ram Dass.

Leary and Alpert administered psychedelic drugs — initially psilocybin but later LSD — to colleagues, prison inmates, and a group of divinity students. Leary later wrote that the divinity students’ participation in the experiments showed that “spiritual ecstasy, religious revelation, and union with God were now directly accessible.”

He also reported that their subjects largely had “profound mystical and spiritual experiences, which…permanently altered their lives in a very positive manner.”

Marsh Chapel Window At Harvard

John Stephen Dwyer/Wikimedia CommonsThe rose window in Harvard’s Marsh Chapel, site of some of the Harvard Psilocybin Project’s experiments.

But one participant hilariously described the project as “a bunch of guys standing around in a narrow hallway saying ‘Wow.'”

Unsurprisingly, Leary and Alpert’s work attracted a considerable amount of controversy, particularly when rumors spread that they were pressuring graduate students to participate while also giving drugs to undergraduates. The parents of students, for one, agreed that these alterations were not all positive. They protested the project’s legitimacy to Harvard.

In 1963, Harvard fired Alpert and declined to renew Leary’s teaching assignment — the reason given was that he’d stopped showing up to his scheduled lectures due to spending so much time on his psychedelics experiments. It was just as well. Leary would find the means to continue his experiments in relative autonomy.

Experiments At Millbrook And Growing Fame

An unlikely source offered Timothy Leary the space to continue his work: the heirs to the Mellon family fortune. Wealthy siblings Peggy, Tommy, and Billy Hitchcock acquired a 64-room mansion in Millbrook, New York and allowed Leary and Alpert to use it as the home base for their psychedelic research.

While the environment at Millbrook was more freewheeling than that at Harvard, Leary’s methods for experimenting with LSD were still fairly structured and organized, especially when compared to how LSD was used by other prominent 1960s, countercultural experimenters.

Millbrook Mansion

Alvis Upitis/Getty ImagesThe Millbrook Mansion.

In his book The Electric Kool-Aid Acid Test, author Tom Wolfe described Leary and Alpert’s preferred “set and setting” method for ingesting LSD:

“The ‘set’ was the set of your mind. You should prepare for the experience by meditating upon the state of your being and deciding what you hope to discover or achieve on this voyage into the self. You should also have a guide who has taken LSD himself and is familiar with the various stages of the experience and whom you know and trust.”

During this time period, Leary befriended the poet Allen Ginsberg, whose fame brought Leary into contact with a wide variety of celebrities and intellectuals. Leary was able to evangelize his beliefs about the benefits of LSD and other psychedelics to such figures as jazz musician Charles Mingus, writer William Burroughs, and multimedia magnate Henry Luce.

Leary’s courting of prominent figures was partially a strategic ploy to further his work on psychedelics. But it was also a way for him to engage with his own desire for fame.

Timothy Leary And His Second Wife At Their Wedding

New York Public LibraryTimothy Leary and his second wife, model Birgitte Caroline “Nena” von Schlebrügge, during their wedding at Millbrook. 1964.

Leary’s son Jack would later say that his father “never wanted to be a guru. He wanted to be a rock star, a Mick Jagger, but he couldn’t play the guitar.”

In 1964, Leary, Alpert, and Ralph Metzner published the book The Psychedelic Experience: A Manual Based on The Tibetan Book of the Dead.

The book includes the line, “Turn off your mind, relax, and float downstream,” which John Lennon later adopted for the lyrics to The Beatles’ song “Tomorrow Never Knows.”

Turn On, Tune In, Drop Out

By the mid-1960s, Timothy Leary had become one of the leading public advocates for the use of LSD and other psychedelic drugs. But unlike author Ken Kesey and his “Acid Test” parties in California, Leary promoted the drug on a foundation of doctoral credentials and regimented experiments.

Leary was then invited to testify before a United States Senate subcommittee investigating whether or not LSD was dangerous and should be outlawed.

When Senator Ted Kennedy asked him if LSD was dangerous, Leary replied that “the motor car is dangerous if used improperly…Human stupidity and ignorance is the only danger human beings face in this world.”

The Senate apparently did not find Leary’s testimony compelling, as they moved ahead with plans to outlaw LSD.

Then, in early 1967 at the “Human Be-In,” a San Francisco hippie rally protesting a California law outlawing the use of LSD, Leary unveiled to a mass audience what would soon become his most famous catchphrase: “Turn on, tune in, drop out.”

High Priest Of LSD

New York Public LibraryA brochure for a lecture tour by Timothy Leary and Ralph Metzner. 1965.

Leary developed the aphorism with the assistance of the media theorist Marshall McLuhan, who told Leary, “The key to your work is advertising. You’re promoting a product. The new and improved accelerated brain. You must use the most current tactics for arousing consumer interest.”

While Leary’s growing fame attracted attention from celebrities, it also brought the eyes of law enforcement. In 1965, he was arrested for possession of marijuana in Texas. He was sentenced to 30 years in prison but eventually had his conviction overturned on appeal.

Meanwhile, the Millbrook compound was repeatedly subjected to FBI raids and harassment from an especially eager assistant district attorney named G. Gordon Liddy, who would later become infamous as one of the architects of Richard Nixon’s Watergate scandal.

Then, in 1967, Leary created the League for Spiritual Discovery, a religious organization whose spiritual practices centered around the use of LSD. This was, in part, an unsuccessful ploy to allow Leary and his associates to continue using the drug in the face of looming bans.

Around this time, Liddy’s raids had taken enough of a toll that the Millbrook operation closed and Leary moved to California.

‘We tell young people, ‘drop out’ of school because school’s education today is the worst narcotic drug of all.’

Timothy Leary Goes To California And Reveals His Political Aspirations

Timothy Leary’s 1967 move to Southern California brought him closer to the center of the counterculture movement of which he’d become a leading figure. At the same time, it also increased his exposure to celebrities and criminality.

Shortly after moving to California, Leary married his third wife, Rosemary Woodruff, during an acid-soaked ceremony officiated by a character actor from Hollywood.

He also moved his family to Laguna Beach to participate in the activities of the “Hippie Mafia” known as the Brotherhood of Eternal Love, a non-profit religious organization similar to his own League for Spiritual Discovery.

But, in addition to sharing Leary’s goals of promoting spiritual transcendence through the use of psychedelic drugs, the Brotherhood was also one of the largest drug smuggling and distribution organizations in the country.

Allen Ginsberg and Michael McClure Fundraiser For Timothy Leary

New York Public LibraryA flyer for a benefit for Timothy Leary featuring the poets Allen Ginsberg and Michael McClure. San Francisco. 1973.

In December of 1968, Leary was arrested again in Laguna Beach for possession of marijuana. The arresting officer, Neil Purcell, had been trying to bust the Brotherhood for two years.

Part of the reason Purcell had chosen to arrest Leary was that he recognized him for his psychedelics advocacy. For his part, Leary claimed that Purcell planted the drugs on him.

Then, in 1969, on the day Leary won his appeal for his 1965 marijuana arrest and awaited trial for his 1968 marijuana bust, he announced his candidacy for the governorship of California.

While he did so in front of the Laguna Beach art gallery called Mystic Arts World — the Brotherhood of Eternal Love’s headquarters — his political ambitions were not supported by the members of the Brotherhood.

Leary With Gordon Liddy

Gordon Liddy (left) with Timothy Leary in 1983.

The announcement caught many people by surprise. As it happens, Leary had not been politically active outside of his advocacy for psychedelic drugs, and politicians were not exactly popular with 1960s counterculture.

But thanks to the escalating war in Vietnam, the burgeoning War on Drugs, and the rise of the Black Power movement, the counterculture of the late 1960s was taking on a more political bend than it had at the beginning of the decade. Besides, for politicians hoping to turn attention away from war and their own shortcomings, ostracizing the counterculturists appeared to be a saving grace.

Through his speaking tours on college campuses and socializing with celebrities, Leary promoted his pro-psychedelics message and personal associations to fit this new, more political environment.

Bed-In For Peace

Roy Kerwood/Wikimedia CommonsTimothy Leary with John Lennon and Yoko Ono at their Bed-In for Peace. Montreal. 1969.

He attended the anti-war Bed-Ins for Peace held by John Lennon and Yoko Ono in Montreal. In return, Lennon wrote “Come Together” as a theme song for Leary’s gubernatorial campaign.

More Legal Troubles And A Decline

Timothy Leary’s political campaign ended in early 1970 when he was convicted of marijuana possession and given consecutive 10-year sentences. It seemed like the eccentric psychologist would spend a good part of his remaining life behind bars.

But Leary had other plans. With assistance from the Brotherhood, he concocted a plan to escape the California Men’s Colony Prison in San Luis Obispo.

Thanks to his previous work creating personality tests, he was able to game the answers to the psychological tests given to him during his prison intake in order to get assigned to do outdoor work at the prison.

This allowed him to hop the fence, pull himself along a telephone wire, and jump into a waiting car.

The Brotherhood paid thousands of dollars to the Weathermen – a radical organization that opposed American imperialism – to help facilitate the escape and smuggle Leary and his wife out of the country.

Eventually, the Learys made their way to the Black Panthers‘ Government-in-Exile in Algeria. However, Leary and his wife’s frequent partying conflicted with the austerity and sobriety of the Panthers, causing Panther leader Eldridge Cleaver to put them under house arrest.

Timothy And Rosemary Leary's Passports

www.timothylearyarchives.orgTimothy and third wife, Rosemary Leary’s, Algerian passports in 1970.

Next, Leary and his wife escaped to Switzerland, where they came to live with Michel Hauchard, an arms dealer who said that he sheltered Leary because he had an “obligation to protect philosophers.”

However, Hauchard also forced Leary to sign over 30 percent of the proceeds of any future books he would write. He then got Leary arrested, under the assumption that he would be a more productive writer while in prison.

The Learys escaped again, then separated. Rosemary Leary spent most of the next two decades as a fugitive back in the United States while Leary was finally arrested by the American Bureau of Narcotics and Dangerous Drugs in Kabul, Afghanistan in 1972. He was sent to Folsom Prison and placed in solitary confinement.

Allegedly, the prisoner in the next cell was none other than infamous cult leader Charles Manson, who told Leary, “They took you off the streets so that I could continue with your work.”

Tune In Turn On Drop Out

Newsweek November 1970/Larry MackLeary mixed and mingled with the finest in politics, activism, and celebrity. Here he is pictured in a 1970’s printing of Newsweek with then-leader of the Black Panther Party, Eldridge Cleaver.

While in prison, Leary gave information to the FBI about the Weathermen Underground Organization which had helped him to escape. Leary later claimed he intentionally gave them useless info that was already well known.

Nonetheless, many of Leary’s associates in the counterculture were appalled. Allen Ginsberg, Ram Dass, and even Leary’s own son Jack called a press conference to publically denounce him.

Later Years And A Public Death

Lucky for Leary, Governor Jerry Brown released him from prison in 1976. He was initially placed in the witness protection program but moved back to California to resume his life as a third tier celebrity.

Tim Leary Lecture Tour In 1979

Brian Crawford/FlickrTimothy Leary on a lecture tour. Southern Illinois University at Carbondale. 1979.

Leary gave lecture tours as a “stand-up philosopher” including a surprisingly successful joint tour with his former adversary and fellow ex-con, G. Gordon Liddy. He also wrote occasional pieces of cultural criticism for conservative magazines such as the National Review.

By this point, Leary was no longer attempting to publicly promote psychedelics. He did, however, develop a keen interest in computers as the next great frontier in human consciousness, working on the development of something called the eight-circuit model of consciousness.

As part of this interest in the 1990s, Leary created a website that functioned as a sort of proto-blog cataloging his daily drug intake.

Not content with just computers, Leary also developed a transhumanist philosophy which called for space colonization, life extension, and increasing the human intellect. He summarized these ideas as SMI2LE – Space Migration, Increased Intelligence, and Life Extension.

Then, in 1994, Leary wrote in his book Chaos and Cyber Culture, that “the time has come to talk cheerfully and joke sassily about personal responsibility for managing the dying process.”

Leary On His Deathbed

Robert Gauthier/Los Angeles Times via Getty ImagesFriends and family hold a vigil for Leary as he approaches death in his Beverly Hills home on May 30, 1996.

A year later, he was diagnosed with inoperable prostate cancer. Timothy Leary died at age 75 on May 31, 1996, surrounded by friends and family. His death was broadcast live on his website, where his final words were, “Why not? Why not? Why not?”

After his death, some of his cremated remains were sent into orbit in a rocket. Meanwhile, Hollywood actress Susan Sarandon scattered some of his ashes at the Burning Man festival in 2015.

The Enduring Legacy Of Timothy Leary

Timothy Leary’s work with psychedelic drugs was important to the 1960s countercultural movement that rebelled against the restrictive conservatives of mid-20th century America.

But his status as a spiritual leader was not well-suited to him. As Leary’s life showed, he did not want to be a guru, but an iconoclast whose genuine interest in expanding the possibilities of human consciousness was tempered by his hedonism, ego, and desire for celebrity.

Hold Me, Thrill Me, Kiss Me

Wikimedia CommonsTimothy Leary appearing in a movie role as Mr. Jones in 1992’s Hold Me, Thrill Me, Kiss Me.

His status as a danger to the public was similarly overblown. While we can debate the merits of psychedelic drug use, it’s comical to imagine Leary being the “most dangerous man in America” compared to such figures as his onetime jailmate, Charles Manson, or the man who burdened him with that label, President Richard Nixon.

In many ways, it seemed the most immediate danger Leary ever posed was to his own family. One wife committed suicide while another spent decades in exile because of his actions.

Meanwhile, his son led a troubled life and his daughter killed her boyfriend, later killing herself. Evidently, Leary left a sordid legacy in his own home.

Timothy Leary was a complex, flawed man who led a fascinating life that’s difficult to summarize in simple black-and-white terms. In this sense, he’s an effective symbol of the free-thinking counterculture he represented.


After reading about the psychedelic evangelist, Timothy Leary, ready about his Harvard colleague and fellow LSD enthusiast, Richard Alpert. Then, check out this gallery of the merry pranksters and their mission to spread LSD throughout the country.

Chris Alarie
Chris Alarie is a writer and musician from California.